I agree with the conclusion that improving reading comprehension is the best way to improve reading speed, at least for me. There are two things I learned from my stuttered attempts at speed reading: (1) The best way to increase reading speed for me is to simply stop re-reading sentences that I already read. I do this unconsciously usually because I didn't fully understand the sentence the first time. Better reading comprehension reduces this. (2) Attempting to speed read is probably a waste of time for me because most of the material I read is technical, so comprehension is usually the bottleneck to getting through the material, anyway.